These simple, quick hairstyles will look like you spent an hour styling your hair, when you've only taken minutes. And haven't shampooed for days. This four-day plan is the real deal.

1. Make fast waves

1. Make fast waves

Hair truth: The less washing and styling you can get away with, the healthier your hair will be. So spin your day-old blow-dry into tousled waves: First, spritz your roots with dry shampoo to nix oil and thicken hair. We like L'Oréal Professionnel Fresh Dust, $19. Then wrap big sections around a large curling iron, "twirling the front sections away from your face," says hairstylist Ted Gibson, who works with Jessica Chastain. To finish, use your fingers to shake it all up.

2. Twist it up

2. Twist it up

On day two, try a French twist--unwashed hair makes it easy and seductive. "Its coarse texture helps the style stay put and look more casual," Gibson says. Back-comb your crown a few times to create volume, then gather your hair at the nape of your neck, slightly to one side. "Holding the ends, twirl your hair and keep twirling as you pull it up and against your head," Gibson says. Stick a few bobby pins horizontally into the roll's underside, and tuck the ends into the top. Take that, Audrey Hepburn!